<?php

class exchange extends CActiveRecord
{
	/**
     * The followings are the available columns in table 'exchange':
	 * @var double $rate
	 * @var string $country
	 * @var integer $period_id
	 */

	/**
	 * Returns the static model of the specified AR class.
	 * @return CActiveRecord the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}

	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return 'exchange';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		return array(
			array('country','length','max'=>4),
			array('rate, country, period_id', 'required'),
			array('period_id', 'numerical', 'integerOnly'=>true),
			array('rate', 'numerical'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations()
	{
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		return array(
			'rate'=>'Rate',
			'country'=>'Country',
			'period_id'=>'Period',
		);
	}
}